Answer:
The author's main reason for writing "Lean, Green, Eco-Machines" is foster the potentiality and consistency of Eco cars.
Step-by-step explanation:
‘Lean, Green, Eco-Machines’ is an article written by David Williams. In the article Williams describes the benefits of using Eco-cars. His main purpose of writing this article is encourage the audience about the reliability of Eco cars.
The author wanted to convey that eco cars are cost effective, convenient, and climate friendly. He wanted to make people aware about the existence of such cars and using such cars will not only benefit us, but at the same time it will also benefit our environment.